[Bug 99274] New: map_gtt reading/writing data mismatch during the GPU reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99274

            Bug ID: 99274
           Summary: map_gtt reading/writing data mismatch during the GPU
                    reset
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: zhipeng.gong at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 128752
  --> https://bugs.freedesktop.org/attachment.cgi?id=128752&action=edit
test case

The issue happens when the app calls map_gtt to reads/writes the data to the
memory, right then the KMD starts call i915_reset to reset the GPU.
The fence registers are reinited during GPU reset, while the CPU is
reading/writing the data through GTT aperture space and fence register at the
same time.
As a result, the data is inconsistent.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20170104/fa8877ab/attachment.html>